Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
669311Factored
FactorDigitsBitsDate
98606572164744289389203987992893.02022-09-24 02:37:55
ECM
DigitsB1Curves
2550000280 / 280
30250000201 / 640
Estimated T-Level: 26.6 ⓘ
TF below 2^83 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David SlowinskiD5A0
Verified (Factored)Jud McCranieBE357C8F812E4D5A0
Verified (Factored)2002-08-17Gordon M. SpenceBE357C8F812E4D5A5307
Verified (Factored)2015-04-11MadPooBE357C8F812E4D5A382841
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-09-24masser2AFE18646C28672017684953
P-1 factors
DateFactorB1B2
2022-09-2498606572164744289389203987994800000048000000
History
DateUserTypeResult
2022-09-24Cosmos95CERT
PRP Certification
Proof certified good
2022-09-24masserC-PRP
M669311/9860657216474428938920398799 : 2AFE18646C286720
PRP proof power = 6
PRP: Verified
Proof certified good
2022-09-24masserF-PM1
Factor: 9860657216474428938920398799 / (P-1, B1=48000000)
2022-09-03masserNF-PP1
Start=2/7, B1=4800000, B2=206400000
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2018-06-13Smok_bmv NF
no factor from 2^68 to 2^69
2017-10-30Smok_bmv NF
no factor from 2^67 to 2^68
2017-10-30Smok_bmv NF
no factor from 2^66 to 2^67
2017-08-04Smok_bmv NF
no factor from 2^65 to 2^66
2017-06-30Smok_bmv NF
no factor from 2^64 to 2^65
2015-11-16Sid & AndyNF-PM1
B1=6693110, B2=200793300, E=12
2015-11-05Gordon SpenceNF
no factor from 2^63 to 2^64
2015-11-05Gordon SpenceNF
no factor from 2^62 to 2^63
2015-05-25lycornNF
no factor from 2^61 to 2^62
2015-04-11MadPooC-LL
BE357C8F812E4D5A
2013-10-19David CampeauNF-PM1
B1=1380000, B2=44160000, E=12
2012-08-11JossNF-PM1
B1=1338622
2012-06-19JossNF-PM1
B1=669391
2011-09-11JossNF-PM1
B1=559140
2011-07-14JossNF-PM1
B1=335484
2010-08-15Architects CubedNF
no factor from 2^60 to 2^61
2008-10-14Sturle SundeNF
no factor from 2^59 to 2^60
2008-10-14Sturle SundeNF
no factor from 2^58 to 2^59